Catalysts for the curing of a water-curable isocyanate-functional prepolymer

Abstract

New catalysts useful in the curing of a water-curable isocyanate-functional prepolymer are provided. The new catalyst is a new 2,2'-dimorpholinyldialkyl ether. The use of the improved catalyst provides prepolymer/catalyst premix compositions having equivalent or increased shelf stability and which, when water-cured, yield resins having superior early strenghts. A method of curing an isocyanate-functional prepolymer and articles useful as orthopedic bandages are also provided.

What is claimed is: 
     
       1. A compound having the formula: ##STR7## wherein: each of R 1  -R 8  are individually hydrogen or lower alkyl; and R 9  is a methyl group or phenyl group wherein the phenyl group may have one or more lower alkyl substituents.   
     
     
       2. A compound in accordance with claim 1 wherein R 1  -R 8  are hydrogen and R 9  is methyl. 
     
     
       3. A compound in accordance with claim 1 wherein R 1  -R 8  are hydrogen and R 9  is phenyl. 
     
     
       4. A compound in accordance with claim 1 wherein R 9  is methyl. 
     
     
       5. A compound in accordance with claim 1 wherein R 9  is phenyl. 
     
     
       6. A compound in accordance with claim 1 wherein R 1  -R 8  are hydrogen and methyl. 
     
     
       7. A compound in accordance with claim 1 wherein R 1  -R 8  are hydrogen.